1/* $NetBSD: dlfcn.h,v 1.25 2017/07/11 15:21:35 joerg Exp $ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _DLFCN_H_ 33#define _DLFCN_H_ 34 35#include <sys/featuretest.h> 36#include <sys/cdefs.h> 37#include <machine/ansi.h> 38 39#ifdef _BSD_SSIZE_T_ 40typedef _BSD_SSIZE_T_ ssize_t; 41#undef _BSD_SSIZE_T_ 42#endif 43 44#if defined(_NETBSD_SOURCE) 45typedef struct _dl_info { 46 const char *dli_fname; /* File defining the symbol */ 47 void *dli_fbase; /* Base address */ 48 const char *dli_sname; /* Symbol name */ 49 const void *dli_saddr; /* Symbol address */ 50} Dl_info; 51#endif /* defined(_NETBSD_SOURCE) */ 52 53/* 54 * User interface to the run-time linker. 55 */ 56__BEGIN_DECLS 57void *_dlauxinfo(void) __pure; 58 59void *dlopen(const char *, int); 60int dlclose(void *); 61void *dlsym(void * __restrict, const char * __restrict); 62#if defined(_NETBSD_SOURCE) 63int dladdr(const void * __restrict, Dl_info * __restrict); 64int dlctl(void *, int, void *); 65int dlinfo(void *, int, void *); 66void *dlvsym(void * __restrict, const char * __restrict, 67 const char * __restrict); 68void __dl_cxa_refcount(void *, ssize_t); 69#endif 70__aconst char *dlerror(void); 71__END_DECLS 72 73/* Values for dlopen `mode'. */ 74#define RTLD_LAZY 1 75#define RTLD_NOW 2 76#define RTLD_GLOBAL 0x100 /* Allow global searches in object */ 77#define RTLD_LOCAL 0x200 78#define RTLD_NODELETE 0x01000 /* Do not remove members. */ 79#define RTLD_NOLOAD 0x02000 /* Do not load if not already loaded. */ 80#if defined(_NETBSD_SOURCE) 81#define DL_LAZY RTLD_LAZY /* Compat */ 82#endif 83 84/* 85 * Special handle arguments for dlsym(). 86 */ 87#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ 88#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ 89#define RTLD_SELF ((void *) -3) /* Search the caller itself. */ 90 91/* 92 * dlctl() commands 93 */ 94#if defined(_NETBSD_SOURCE) 95#define DL_GETERRNO 1 96#define DL_GETSYMBOL 2 97#if 0 98#define DL_SETSRCHPATH x 99#define DL_GETLIST x 100#define DL_GETREFCNT x 101#define DL_GETLOADADDR x 102#endif /* 0 */ 103#endif /* defined(_NETBSD_SOURCE) */ 104 105/* 106 * dlinfo() commands 107 * 108 * From Solaris: http://docs.sun.com/app/docs/doc/816-5168/dlinfo-3c?a=view 109 */ 110#if defined(_NETBSD_SOURCE) 111#define RTLD_DI_LINKMAP 3 112#if 0 113#define RTLD_DI_ARGSINFO 1 114#define RTLD_DI_CONFIGADDR 2 115#define RTLD_DI_LMID 4 116#define RTLD_DI_SERINFO 5 117#define RTLD_DI_SERINFOSIZE 6 118#define RTLD_DI_ORIGIN 7 119#define RTLD_DI_GETSIGNAL 8 120#define RTLD_DI_SETSIGNAL 9 121#endif 122#endif /* _NETBSD_SOURCE */ 123 124#endif /* !defined(_DLFCN_H_) */ 125